Rail-track fastening



Jan. 23, 1923. 1,443,275

F. RA T. v RAIL TRACK TENING. FILED JULY 13. 1922. 2 SHEETS-SHEET I Jamaal;

.ZiRadelel.

Jan. 23, 1923. 1,443,275

- F. RADELET.

v RAIL TRACK FASTENING FILED JULY 13, 1922 2 SHEETS-SHEET 2 Patented Jan. 23,1923.

"UNITED sires rarsn r Fr es.

FERNAND nAnELE'r, or BRUSSELS, BELGIUM.

aernrnacx Application filed m 13,.

To all w/zom i may concern:

Beit known that I Fnmaann EADELET, citizen of Belgium, residing at 41 Rue Royale, Brussels, in the Kingdom of Belgium, have invented certain new and useful Improvements in Rail-Track Fastenings, of which the following is a specification.

Thisinvention relatesto rail-track fastenings for securing the rails to the sleepers, andit has for its object to provide fastenings' of this kind whereby the flange or foot of the rail is firmly and permanently grippechthe stresses being taken up by broadsurfaced parts. i

In fastening-s in which coach screws or spikes arein direct contact with the flange of the raihthe surface of contact is frequently very small and the concentration of stresses thereon is conducive to undue Wear of the screw or bolt and to the shearing of the flange. Moreover when coach screws or spikes are used for securing to the sleepers members such as chairs, clips or the like which have a greater area of contact with the rail, it is difficult to prevent the various parts from becoming slaclrened by the vibrations of the rail. Finally, further parts are necessary to prevent the rail from creeping longitudinally.

The fastening according to the present invention obviates these disadvantages. It essentially comprises a shoulder and a bearing piece which conforms to the shape of the edge of theflange of the rail and bears on the latter only, the said. shoulder and hearing piece being recessed at a suitable point or points to form together an expansible conical seat receiving a conical counterpart which is pressed on tothe said seat by a clamping member engaging the sleeper;

According to the nature of thesleeper the shoulder may be integral with the said sleeper, or it may be an embossed portion on a sole-plate locatedunder the flange of the rail, or. a removable shoulder held in position by. suitable means. The clamping member may be for instance a coach-screw with a conical head, ajbolt with aconical nut or a conical washer combined with an ordinary coach-screw or an ordinarybolt.

.VVhen the fastening according to this'invention iis being clamped in position the conical member'forced into the expanding seat acts as a wedge and tends to thrust the bearing-piece aways-Om the shoulder, and the Y said bearingpiece presses in an obliquedownras'rnnme. p 1922. Serial No. 574,658.

ward direction'on the flange of the rail, the yertical component of this force firmly holding' the rail onto the sleeper, the horizontal component thereof firmly gripping the rail laterally. Also the shape of the bearing pieces is such that the rail is wedged thereliie tween and longitudinal creeping is pre vented. The bearing piece is preferably slightly curved in order that rattling of the parts beprecluded in case their hold on the rail should be somewhat loosened.

The accompanying drawings exemplify some constructions of the fastening accord ing to the present invention.

' Figurel is a sectional elevation A-B of Figure 2.

on the line Figure 2 shows in plan a "ail secured to a wooden sleeper by means of coach-screws;

Figure 3 is a partial vertical section showing a modified form of the fastening.

Figures 4, 5' and 6 are respectively atop view, a cross-section on line E--F (Fig. 1-),:

and a side elevation of the a larger scale.

hlgin'es 7 and 8 show bearing piece on a rail secured to a metal sleeper in sectional elevationon the plan, partially section holes (5 affording passage to the coach-screws A. hearing piece 9 (Figures 5 and 6) is interpolated between the conical head f of each coach-screw e andthe flanged of the rail, a conical recess it being cut on the up per faceofthe-said bearing piece the lower face 'i of which follows the bendof the edge of the fiangefa. A shoulder integral with the sole-plate 6 forms an outer fixed hear ing for the head fof the coach-screws on the opposite side to the bearing piece g. Opposite each hole (,Z in the plate 6, the shouldcr'y', isprovided with a recess 0 (F igure 2) which like the recess JL substantially :i'ollows-the conical face of the head 7 of the coach-screw, The diameterof the holes (Z is larger than that of the stem of the coachscrews 6 so that when the latter are being screwed in position and their conical head 7 comes in contact with the conical face of one of'the recesses it or the said face serves as a guide to give the coach-screw 6 its correct position, the said coach-scr W reaching its final position only when'its head f is wedged between the conical faces of the two recesses. This arrangement has the advantage of gripping the rail very firmly without any of the parts being out of their true position notwithstanding any likely fault due to ina'ccuraciesin the manufacture of the said parts.

The construction illustrated in Figure 3 differs from thatjust described in thatthe flange a of the rail is in direct contact with the sleeper c which is'cut at L- to form a shoulder Z whereon the head 7' of the coachscrew (1 takes a bearing. These shoulders Z are conically recessed like the shoulders of the previous construction and they serve the same purpose. p v

Figures 7 and 8 relate to a fastening to be t-ted to metal sleepers provided with a slot (Z. Q provided with an elongated foot 2) and a nut t having a conical base In this case a removable shoulder r is provided having a lug .s'. The bolt q is caused to engage the slot at of the sleeper, the footp being placed lengthwise to the said slot and thereafter rotated through90 and lifted. in order to engage a square portion a of the bolt between the walls of the slot (Z, for the purpose of preventing the said bolt from turning about its axis. The shoulder r is placed in position inserting the lug s in the free portion of the slot 0?, the bearing piece g, be ing placed on the edge of the flange a whereafter the nut t is tightened in position. The conical, base f of the said nut engages the conical recesses 0 and it of the shoulder 'r and bearing piece 9 respectively.

T he thickness of the lugs s of the removable shoulders r located on either side of the rail may vary in order to modify the track at the curvesby changing over the position of the two removable shoulders of some of the fastenings in order to alter the position for the rails bn the sleepers, so that sleepers having uniform slots (Z maybe used.

The nut t provided with a. conical base as illustrated in Figure 7 may of course be replaced by a nut of the usual type such as 15 (Figure 9) which may be tightened onto a conical washer fitting the conical recesses provided therefor.

The fastening of Figure 9 is further differentiated from. that of Figure 7 by asoleplate 6 interpolated betweenthe sleeper 0 and the flange. of the rail. The square portion a of the bolt 9 and the lug s of the removable shoulder r engage the slot (Z of the sole-plate b and d of the sleeper 0 so that all the parts are'firmly secured in position.

Referring now to the construction illus- The clamping member comprises a bolt tratedin Figure 10, thebolts pass through a metal sole-plate b, a wooden bearing member 5c and the concrete sleeper c, the holes of which are suitably fitted with a lining a. The lower end of thebolt Q has a square portion u engaging a square hole of a metal plate on which the head p of the bolt is caused to rest the plate to seating in a recess inthe sleeper c in order to have as wide an area of contact with the sleeper as possible. The threaded end of each bolt receives a nut 1; the conical base f of which is adapted to fit an expanding conical recess formed in l igure l by the bearing piece g/ and a shoulder j secured to or integral with the metal sole-plate B. The bolts of this construction are placed in position frombelow the sleeper, but bolts with anelongated foot as shown in Figures 7, 8 and 9 may obviously be used with the aforementioned concrete sleepers. In this connection sole-plates with removable shoulders would be used; also sleepers and plates '10 provided with slots in which the bolts are inserted from above. v

It will be noticed from the foregoing that whatever he the construction of the fastening according to this inventiointhe bearing piece 9 is incontact with the flange a of the rail and the conical face 7' or f of the clamping member only. It is indeed essential to provide an appreciable clearance such as n (Fig ures 1 and 8) in order that the full amount of pressure exerted by the clamping member on the bearing piece 9 be totally transmitted by the latter to the rail. w

The grip ma be further improved by making the bearing piece 9 of resilient metal and slightly curving the said piece prefer ably in a plane perpendicular to the arc Y-Z (Fig. forming the face 2' of the said piece, as indicated in an exaggerated manner in Figures 4:, 5 and 6. In this case the pres sure exerted by the clamping member flatt ns the curved face i onto the flange a of the rail so that any slack or play that might occur either in the vertical or horizontal direction owing to the settling of the earth after a time, is automatically compensated for by the latter to carry the bearing pieces g, with it but the said pieces owing to their hollowed out shape will become, wedged between the flange of the rail and the clamping members f or f so that the grip is increased to prevent any shift.

the bearing piece 9 which owing to its resilia sleeper, a conical face on said means, a fixed shoulder, and a bearing piece adapted to rest on the edge of the flange of a rail, said shoulder and bearing piece being recessed to form together an expansible conical seat for the conical face on said clamping means.

2. In a rail-track fastening, the combination of clamping means adapted to engage a sleeper, a conical face on said means and an expansible conical seat for said conical face comprising a fixed part and a movable part adapted to be clamped solely between said conical face and the edge of the flange of a a rail.

3. In a rail-track fastening, the combination of clamping means adapted to engage a sleeper and having a conical face, and an expansible conical seat for said conical face, said seat comprising a fixed part and a movable part conforming to the edge of the flange of a rail and adapted to be pressed obliquely thereagainst by said conical face.

4. In a rail-track fastening, the combination of clamping means adapted to engage a sleeper and having a conical face, and an expansible conical seat for said conical face, said seat comprising a fixed part and a bearing piece adapted to engage the edge of the flange of a rail, said bearing piece having a transverse curvature conforming to the said edge and a slight longitudinal curvature,

5. In a rail-track fastening, the combination of clamping means adapted toen age a sleeper and having a conical face, anc an expansible seat for said conical face, said seat comprising a fixed part and a bearing piece adapted to engage the edge of the flange of a rail, said bearing piece having a transverse curvature conforming to thesaid edge and a slight longitudinal curvature on a plane substantially perpendicular to its transverse curvature.

6. The combination with a rail and a sleeper, of a sole-plate inserted between said rail and sleeper, clamping means adapted to extend through'said sole-plate and into said sleeper, said clamping means having a conical face, and an expan'sible conical seat for said conical face, said seat comprising a fixed shoulder on said sole-plate and a bearing piece adapted to be clamped solely between i said conical face and the edge of the flange of said rail. v

7. The combination with a rail and a sleeper, of a sole-plate inserted between said rail and sleeper, said sole-plate having a hole, clamping means comprising a bolt adapted toextend through said hole and into said sleeper and a nut having a conical base,

and an expansible conical seat for said conical base said seat comprising a fixed should-er remova 1y secured in said hole and abearing piece adapted to be clamped solely between said conical face and the edge of the flange of the rail.

8. As a novel articleof manufacture, an

elongated piece of metal having its upper face provided with a semi-conical recess and its lower face curvedto conform to the edge of the fiangeof a rail.

19. As a novel article of manufacture, an

elongated piece of metal having its upper face provided with a semi-conical recess and its lower face curved transversely to conform to the edge of a rail and longitudinally to increase the resiliency of said piece, said longitudinal curvature being on a plane sub stantially perpendicular to said transverse curvature.

In testimony whereof I have aflixed my signature.

FERNAND RADELET.

Witnesses:

HENRY WV; PLUOKER, LnN PIERARD. 

